Exploration Technique: Teleseismic-Seismic Monitoring
|Exploration Technique Information|
|Exploration Group:||Geophysical Techniques|
|Exploration Sub Group:||Seismic Techniques|
|Parent Exploration Technique:||Passive Seismic Techniques|
|Information Provided by Technique|
|Lithology:||Rock unit density influences elastic wave velocities.|
|Stratigraphic/Structural:||Map geothermal reservoir geometry. Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc.|
|Hydrological:||Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation.|
|Thermal:||High temperatures and pressure impact the compressional and shear wave velocities.|
- "Teleseismic imaging provides a means to constrain the deeper portions of a geothermal reservoir (to the upper mantle) and enables detailed mapping of the heat source and the tectonic environment. The ability of a teleseismic survey to image to the upper mantle is advantageous because traditional Active Seismic Techniques may be limited in their depth of investigation due to high seismic wave attenuation in complex geothermal areas.'"`UNIQ--ref-00000000-QINU`"'<br><br>The teleseismic method ‘exploits locally scattered waves generated by impinging teleseismic earthquakes (30° to 60° epicentral distance) to image the crust and upper mantle’ of a geothermal field.'"`UNIQ--ref-00000001-QINU`"' This technique is also capable of detecting high-velocity intrusions potentially related to magmatic systems.'"`UNIQ--ref-00000002-QINU`"'<br><br>" cannot be used as a page name in this wiki.
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The teleseismic method ‘exploits locally scattered waves generated by impinging teleseismic earthquakes (30° to 60° epicentral distance) to image the crust and upper mantle’ of a geothermal field. This technique is also capable of detecting high-velocity intrusions potentially related to magmatic systems.
An array of seismometers is installed in the vicinity of a geothermal reservoir. This passive seismic network then records teleseismic events resulting from earthquakes around the earth. The time period for the measurement varies from months to years.
- (Wilson and Jones 2004) "Geothermal Resource Mapping Using Teleseismic Conversions "
- (Iyer, n.d.) "Characteristics of Cascades magmatic systems determined from teleseismic-residual studies "
- Central Nevada Seismic Zone Geothermal Region
- Clear Lake Area
- Coso Geothermal Area
- Dixie Valley Geothermal Area
- Geysers Area
- Hawthorne Area
- Kilauea Southwest Rift And South Flank Area
- Kilauea Summit Area
- Lassen Volcanic National Park Area
- Long Valley Caldera Geothermal Area
- New River Area
- Newberry Caldera Area
- Northern Basin and Range Geothermal Region
- Northwest Basin and Range Geothermal Region
- Valles Caldera - Redondo Geothermal Area
- Valles Caldera - Sulphur Springs Geothermal Area
- Walker-Lane Transition Zone Geothermal Region
- Yellowstone Caldera Geothermal Region